Can OnStar Drive Without a Key?

[VonBrielle]

OnStar can only remotely start the vehicle, but you still need the key to turn on the ignition and unlock the steering wheel lock to drive. Functions of Car Keys: Some cars require pressing the trunk button twice, while others require holding down the trunk control button to open the trunk. Remote window control is useful in summer when the car is stuffy; you can remotely open all windows to release the hot air before driving. In chaotic situations where entering the car might be risky, you can set the key to open only the driver's door with one press and all doors with two presses. How Car Keys Work: A weak radio wave is emitted from the key fob, received by the car's antenna. The electronic control unit (ECU) then identifies the signal code, and the system's actuator performs the locking or unlocking action. The system mainly consists of a transmitter and a receiver.